19619840

素因数分解:

$2^{13}\times 5^1\times {\mathrm{479}}^1$

素因数の和:510

約数の個数: 56

約数和(自身を含む): 47183040

約数和(自身を除く): 27563200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 479, 512, 640, 958, 1024, 1280, 1916, 2048, 2395, 2560, 3832, 4096, 4790, 5120, 7664, 8192, 9580, 10240, 15328, 19160, 20480, 30656, 38320, 40960, 61312, 76640, 122624, 153280, 245248, 306560, 490496, 613120, 980992, 1226240, 1961984, 2452480, 3923968, 4904960, 9809920, 19619840]

約数ペア:

[(1, 19619840), (2, 9809920), (4, 4904960), (5, 3923968), (8, 2452480), (10, 1961984), (16, 1226240), (20, 980992), (32, 613120), (40, 490496), (64, 306560), (80, 245248), (128, 153280), (160, 122624), (256, 76640), (320, 61312), (479, 40960), (512, 38320), (640, 30656), (958, 20480), (1024, 19160), (1280, 15328), (1916, 10240), (2048, 9580), (2395, 8192), (2560, 7664), (3832, 5120), (4096, 4790)]